#include <cstdio>

using namespace std;

typedef long long LL;

const int N=10000010;

LL n,ansl[N],ansr[N];

int main(){

    while(~scanf("%lld",&n)){

        LL l=1,r=0,s=0;int cnt=0;

        for(;l*l<=n;s-=l*l,l++){

            while((r+1)*(r+1)<=n&s<n){r++;s+=r*r;}

            if(s==n){ansl[++cnt]=l;ansr[cnt]=r+1;}

        }printf("%d\n",cnt);

        for(int i=1;i<=cnt;i++){

            printf("%lld",ansr[i]-ansl[i]);

            for(int j=ansl[i];j<ansr[i];j++)printf(" %d",j);

            puts("");

        }

    }return 0;

}